I am looking for historic extent data for the city of Beirut, in Lebanon.
I would like to show the growth of the city over time, from 1950 to today. The data are to be used in a web visualisation to aid story-telling and therefore do not necessarily have to be from an authoritative source. Ideally I'd like to show the growth of the city one decade at a time, so 1950 - 1960 - 1970 - 1980 and so on.
I've looked at a number of data sources - including GADM and a number of 'GIS data aggregator' sites. Whilst finding contemporary boundaries isn't too difficult, finding historic data for comparison purposes is proving a challenge. Any spatial format is fine, even Excel with coordinates would be workable.